Automatic gas-burner-controlling mechanism.



J. H. SKITT] v AUTOMATIC GAS BURNER CONTROLLING MECHANISM.

APPLICATION FILED MAY 11, 1914.

Patented Mar. 23, 1915.

2 SHEBTS-SHBET 1.

INVENTCR y. 8/

BY A'TI'ORNEY WITNESSES THE NORRIS PETERS co, PHorC-url-(O. wa=- \1 s,

J..H. SKITT, AUTOMATIC GAS BURNER CONTROLLING MECHANISM.

APPLICATIONIILED MAY 11, 1914.

Patented Mar. 23, 1915.

2 SHEETS-SHEET 2.

INYENTOR Kma- I ATI'ORNEY WITNESSES fa e /M ERS CO, PHOT0-LITHO.. WASHINGTON. D. C.

7 employing JAMES H. SKIT'1, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOB TO ROBERT E. SMITH AND GEORGE E. DRUM, BOTH OF'PHILADELIPHIA, FENNSYLVANIA, TRADING A? FIRM 0F SMITH, DRUM & COMPANY.

AUTOMATIC GAS BUBNER-CONTROLLING MECHANISM.

Applica'lion filed May 11, 1914.

To all whom it may concern: 7

I Be itknown that 1, JAMES H. SKITT, a subject of the King of Great Britain, residing in the city and county ofv Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Automatic Gas-Burner-Controlling Mechanism, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My present invention relates to machines intermittently operating gas burners, and the general object of my invention is to improve the means employed for automatically turning said burners on and of.

More specifically, the object of my invention is toprovide a simple, effective and readily adjustable automatic burner control mechanism especially adapted for applipation to an existing type of hosiery singeing machine to start the appropriate gas burners as each stocking enters the singeing zone, and to extinguish the burner flames as the stocking leaves that zone.

The-various features. of novelty characterizing my invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, however, and of the advantages possessed by it, reference should be had to the accompanying drawings and descriptive matter, in which I have illustrated and described a preferred form in which my invention may be embodied.

Of the drawings: Figure 1 is a partial front elevation of a stocking singeing machine to which my invention is applied;

Fig. 2 is a partial side elevation, taken at right'angles to Fig. 1; Fig.3 is a sectional elevation of one of the controlling valves employed; and Fig. 4 is a side elevation of the form carrier.

The stocking singeing machine shown in the drawings is of a well known type in common use in which a continuously rotating member carriesa set of stocking forms which are curved circumferentially about the axis of the said member and over which stockings are stretched during the singeing operation. As shown, the rotating shaft A of the machine is journaled in the side Specification of Letters Patent.

-ing chamber F Serial No. 837,802.

frames X and X of the machine. The form carrler B is secured to said shaft, and

C are the curved stocking forms secured to Patented Mar. 23,1915.

combustible mixture of air and gas from one i of a corresponding pair. of-similar valves F and F Each of these valves is formed with a central air chamber F and a surrounding gas chamber F The latter opens at its lower end through'an annular port F into an annular conical valve seat F. A conical valve disk is adapted to engage the seat F and then closes the port F as well as thelower end of the chamber F When the disk is moved down from the seat F, the gas port F is opened on the initial movement of the valve, but the lower end of the chamber F does not open until the .movement of the valve is sufficient to carry the cylindrical valve portion P out of the chamber F. On the closing movement of the valve, the air chamber is closed before the port F is closed. The air and gas flowing from the chambers F and F into the mixthrough suitable connections F to the corresponding burners D and E. A spring F tends to hold each valve disk against its seat F, and each valve disk may be moved pass from the latter away from its seat by means of a corresponding stem f. Air is supplied tothe air chambers F of the valves F by pipes G, and gas is supplied to the chambers F through the piping H. Branch gas pipes h supply gas to the constantly burning pilot burners I, one adjacent each of the burners D and E.

The automatic valve controlling mechanism devised by me includes a bracket K, secured to one of the side frames, X, of the machine by bolts K. In this bracket is journaled a cam shaft L, which at its inner end carries a spur gear L in mesh with a gear A carried by the main shaft A, and which serves in the machine shown as one of the driving gears for the shaft A. The number of teeth on the gears A is preferably as many times the number of teeth on gear L as there are form carrying arms B.

At its outer end the shaft L carries two adjustable cams, 1M and N. The cam M is formed by three disks, M, M and M The disk M is keyed to the shaft L, and the disks M and M are secured to the disk ll by the bolt M passing through the slots M in the disks h 2 and M The disk M is formed with a cam rise m, and the disks M and M are formed with similar cam rises m and m respectively. By virtue of the pin and slot connection described, the cam disks M and M may be adjusted rela tively to the disk M to vary the total cam rise of the cam M from its minimum circumferential length, which is the circumferential length of the cam rise m, up to its maX- imum length of approximately three times the circumferential length of the cam rise m. The cam N comprises parts N, N N N N n, n and n respectively. The bracket K is formed with an arm K receiving a stud K on which are journaled cam levers O and P. These are provided with anti-friction rolls, engaging the peripheries of the cams M and N, respectively. The levers O and P are connected by connecting rods Q and Q, respectively, to rockers R and S. The rocker R is carried by a shaft T journaled in brackets X and X secured to the tops of the side frames X and X respectively. The rocker S is secured to a'sleeve U which is journaled in the bracket X and surrounds and really forms a bearing sleeve for the shaft T. The sleeve U is provided with an arm U adapted to engage the stem f of the valve F, and the shaft T carries at its end remote from that at which the rocker It is secured an arm T, adapted to engage the stem f of the valve F In the operation of the machine described, stockings are placed on the various forms C, as each form approaches the position in 'which its front or toe end enters the singeing zone between the corresponding burners D and E. After passing through the singeing zone, each singed stocking is removed to make room for another stocking to be singed when the form is carried through the singeing Zone the neXt time. As shown the ratio of the gears A and L is three to one, so that each of the cams M and N will make three complete turns for each turn of the shaft A; that is, will make one complete turn for each movement through the singeing zone of each stocking form at one side of the machine. The gas is shut-off from each set of burners, except when the appropriate valve F or F is held open by the engagement of the proper cam lever O or P with the rise of the corresponding cam M or N. This shutting ofi of the gas when not needed avoids unnecessary gas consumption, and overheating of the parts, and is well known in the art to be generally desirable. Each of the cams M and N should be adjusted of course to insure the supply of gas to the burners during the period required for a stocking to pass through the singeing zone, and this of course will depend upon the length of the stocking to be singed. With the construction described the cams may be readily adjusted, and may be adjusted independently, so that one length of stockings may be singed at the one side of the machine and another style of stockings of different length at the other side of the machine at the same time. The burner controlling mechanism described is obviously simple in construction and reliable in operation and is capable of ready adjustment to existing machines, not originally equipped with automatic burner controlling mechanism. The valve disclosed, with the particular arangement of air and gas ports and control thereof de scribed and illustrated, has been found es pecially advantageous on account of the sharpness with which the flame is cut ofi, the uniformity of the flame, and the quickness with which it reaches its full volume when the corresponding valve F and F opens.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a singeing machine of the type described, the combination with the framework, rotating form carrier, and burners, of a cam shaft journaled in saidframework at one side of the machine and geared to said form carrier, a pair of independently adjustable cams mounted on said shaft, a rock shaft journaled in said framework and eX- tending from one side of the machine to the other, a sleeve journaled on said rock shaft and in said framework at the side of the machine at which said cam shaft is located, connections between said cams and said rock shaft and sleeve whereby said shaft is rocked by one, and the sleeve rocked by the other of said cams, a burner controlling valve at each side of the machine, an arm secured to said sleeve for actuating the adjacent valve and an arm secured to the rock shaft at the other side of the machine for operating the other valve.

2. In a singeing machine of the type described, the combination with the side frames, rotating form carrier, and burners, of a bracket attached to one side frame, a cam shaft journaled in said bracket and geared to said form carrier, a pair of inclependently adjustable cams mounted on said V shaft, a pair of cam actuated levers also mounted on said bracket and cooperating one with one, and the other with the second of said cams, arock shaft journaled in said frames and extending from one side of the machine to the other, a sleeve journaled on said sleeve for actuating the adjacent valve said rock shaft and in the said side frame to and an arm secured to the shaft at the other 10 which said bracket is secured, connections side of the machine for operating the other between said levers and said rock shaft and valve.

sleeve whereby said rock shaft is rocked by JAMES H. SKITT. one of said cams and the sleeve is rocked by Witnesses: the other cam, a burner controlling valve at M. H. HooD, each side of the machine, an arm secured to JOHN E. HUBBELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents:

Washington, D. G. 

